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Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6465-1)

medium Nessus Plugin ID 184098

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6465-1 advisory.

 - An issue was discovered in drivers/bluetooth/hci_ldisc.c in the Linux kernel 6.2. In hci_uart_tty_ioctl, there is a race condition between HCIUARTSETPROTO and HCIUARTGETPROTO. HCI_UART_PROTO_SET is set before hu->proto is set. A NULL pointer dereference may occur. (CVE-2023-31083)

 - A flaw was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service. (CVE-2023-3772)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-6465-1

Plugin Details

Severity: Medium

ID: 184098

File Name: ubuntu_USN-6465-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 10/31/2023

Updated: 1/9/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:N/A:C

CVSS Score Source: CVE-2023-3772

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.2

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2023-31083

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1040-nvidia-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-88-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-88-lowlatency-64k, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1042-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1049-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1032-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1040-nvidia, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1047-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-88-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1051-azure-fde, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1046-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-88-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-88-lowlatency

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/31/2023

Vulnerability Publication Date: 4/24/2023

Reference Information

CVE: CVE-2023-31083, CVE-2023-3772

USN: 6465-1